Fixed stack size for pork and bucket,
Added config option to block moving shops to another world - should be
useful for servers with per-world inventory,
Updated item list for latest snapshot with focus on Minecraft 1.5.2
* Tested with CB 1.5.2
* Added "/shop reload" to reload the configuration of this plugin
without restarting the server or doing a server-wide reload. (This is
not a way to recover from plugin crashes however)
* Made MySQL reconnect on timeout - should eliminate the need to restart
periodically